Answer: B. 100-h < 40+2h
Step-by-step explanation: If it says the first tank is less it probably is B and not D.
Answer:
x=8
Step-by-step explanation:
A= x+3
B= x+2
C= x+1
A+B+C=30
ANS: X=8
Q1. The answer is 19.
<span>f(x)=2x+8
</span><span>g(x)=5
(f + g)(x) = f(x) + g(x)
(f + g)(3) = f(3) + g(x)
f(3) = 2 * 3 + 8 = 6 + 8 = 14
g(3) = 5
</span>(f + g)(3) = f(3) + g(x) = 14 + 5 = 19
Q2. The answer is -22.
<span>f(x)= -2x+8
g(x)=5x
</span>
(f o g)(x) = f(g(x))
(f o g)(3) = f(g(3))
g(3) = 5 * 3 = 15
(f o g)(3) = f(g(3)) = f(15) = -2 * 15 + 8 = -30 + 8 = -22
aound 15 or it depends how many slices there were in the first place
Answer:
20 sweatshirts and 5 hats
Step-by-step explanation:
So, let's assign our variables.
x = sweatshirts
y = hats
Now, we can set up our system of equations.
x + y = 25
8x + 2.5y = 172.5
In this instance, you can use a variety of methods. I will use substitution.
x + y = 25
x = 25 - y
8(25 - y) + 2.5y = 172.5
200 - 8y + 2.5y = 172.5
200 - 5.5y = 172.5
-5.5y = -27.5
y = 5.5
Now, we can plug in y to solve for x.
8x + 2.5(5.5) = 172.5
8x + 13.75 = 172.5
8x = 158.75
x = 19.84
Now, this was very sloppy work, and now we must make sense of these answers as pertaining to the context of the equation. First, let's try 20 and 5.
20 + 5 = 25
8(20) + 2.5(5) = 172.5 It works!